Alan Palmer,
Not sure if this is worth posting since the problem with Hebrew on the Mac is already known, but I'll go ahead in case this is something more than what has been reported thus far.
In this screencast, I have just opened the BHS and double click on טֽוֹב in Gen 1:12 as soon as my mouse is over the word. You'll notice several EDIT: a few second long delay in BDB opening up, and the gold "flash" takes seconds to disappear after opening (I bring my mouse pointer over it to draw your attention). This is fairly consistent behavior working in L6 whenever a Hebrew resource (especially the BHS) is opened. EDIT: I then run Bible Word Study (notice the hang for the contextual menu to complete when right clicking) which takes a while to complete and then scrolling becomes erratic. BDB is erratic when scrolling also but I cut that part out of the screencast. I could have kept more examples on the screencast but they are getting big and I'm eating up space on the server.
However, I'm happy to say that the performance I'm getting today is significantly better than yesterday's. I don't know what to attribute that to, other than possibly the fact that I had closed out all resources, synced, then reopened my layout fresh for today.
6237.LogosLogs.marknigro.20150118-165155.zip
Screencast here ---> http://www.screencast.com/t/NDbUwHEXr
Mark Nigro
Pastor/Teacher/Student/Writer
www.calvarychapelbiblecollege.com
Yes, the delay opening BHS is undoubtedly related to the known issue with Hebrew rendering.